Method of treating webs or yarns



Nov. 26, 1968 G. SCHLAGENHOF ETAL 3,413,080

MBTHOD OF TREATING WEBS OR YARNS Filed July 31, 1964 W m m W a Gown/6 y b56797 MND/IMSOY zv/za/Awfi no, CQa MwF United States Patent 3,413,080 METHOD OF TREATING WEBS 0R YARNS Gunther Schlagenhof, Wattwil, and Karl Joseph Windhausen, Ebnat, Switzerland, assignors to Heherlein Patent Corporation, New York, N.Y., a corporation of New York Filed July 31, 1964, Ser. No. 386,656 Claims priority, application Switzerland, Aug. 6, 1963, 9,722/ 63 4 Claims. (Cl. 8-137) ABSTRACT OF THE DISCLOSURE .Iethod of treating sheet material and yarns by wrapping same around a perforated drum, rotating the drum and periodically introducing charges of treating fluid into the rotating drum.

This invention relates to a method for the treatment of yarns or webs of material, especially textile fabrics, and more particularly, to such a method for treatment of the material with fluids such as desizing, bleaching or dyeing fluids and the like.

Heretofore, a variety of apparatuses have been known for treating materials such as textile materials, for example, in the form of webs as of woven or knitted goods, or yarns, with liquids for desizing, boiling, bleaching, or dyeing and the like, such materials being presented for treatment in a variety of widths. In one form of known apparatus, the material to be treated is wound up on the perforated jacket of a rotating drum, and the liquid is admitted to the drum and is forced through the perforations and the material by centrifugal force and pump ing pressure. It is important of course to keep to a minimum the quantity of fluid used to treat the material while maintaining satisfactory action, and in this connection reference is bad to copending application Ser. No. 338,911 now Patent No. 3,233,437, according to which means are disclosed for adjusting the annular area or band of effective perforations in the drum to correspond in width to the width of the material being treated in order to obtain precise regulation of the treating material regardless of the width of material being treated.

We have conceived a method whereby the consumption of fluid can be further reduced, and the duration of the process can be considerably shortened. Thus, according to our concept, the stream of fluid is introduced into the rotating drum at intervals instead of continuously as heretofore. For convenience the present specification will be directed to a washing process, but it is to be understood that other processes such as bleaching, dyeing and the like, are also contemplated.

In essence, we contribute a method of washing yarns and sheet material comprising, wrapping the material to be washed on a perforated drum, rotating the drum, and periodically introducing charges of washing fluid into the drum during rotation thereof. The present method may, of course, be used in conjunction with apparatus similar to that disclosed in the aforementioned copending application, as well as with other mechanisms there referred to.

The material wrapped about the drum absorbs a certain quantity of fluid, and if the supply of fluid is interrupted, the fluid still in the drum and in the wrapped material continues to be carried to the exterior of the wrapped material or roll and is dissipated, by reason of the forces generated by the relatively high speed of rotation of the drum, whereby the dissolved impurities are thoroughly Patented Nov. 26', 1968 washed out of the material. The material then absorbs more readily the second, and subsequent charges of fluid, bringing about immediate dilution of the chemicals and impurities to be washed from the material, so that the washing process is accelerated.

As a feature of our invention, we have found it most advantageous to introduce the charges of fluid into the drum for periods of one to five minutes and to maintain the period of interrupted fiow for one to three minutes, and to rotate the drum at speeds of 50 to 300 revolutions per minute. It is also possible to vary the temperature and composition of the respective charges, as desired. At the start of the process, the introduction of liquid may advantageously take place for somewhat longer periods, and as stated, fluids of different composition and temperature may be used successively. For example, an aqueous cleansing solution at a temperature of the order of to C. may first be introduced. and then water at a tempertaure of the order of 70 to 80 C. may be introduced, followed by a charge of cold water at a temperature of the order of 10 to 20 C. Rotation of the drum at a particular speed from 50 to 300 turns per minute depends upon the thickness and number of layers of material wrapped about the drum.

There has thus been outlined rather broadly the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures for carrying out the several purposes of the invention. it is important, therefore, that the claims be regarded as including such equivalent construction as do not depart from the spirit and scope of the invention.

A specific embodiment of the invention has been chosen for purposes of illustration and description, and is shown in the accompanying drawing, forming a part of the specification, wherein the sole figure is a longitudinal sectional view of typical apparatus in connection with which the present method may conveniently be practised.

In the figure, the roll of material 1 is shown wrapped about the drum 5 which may have a diameter of about 50 cm. and which has a perforated hollow shaft 6 extending axially therethrough. At one end, the shaft 6 is equipped with a longitudinally bored tap 7 which may be connected to an inlet pipe or conduit provided with a suitable valve (not shown). The opposite end of the shaft 6 is stopped with a plug 8 which has an extension 9 serving as a trunnion, a further extension 10 of which serves as a power driven shaft. The tap 7 and trunnion 9 are mounted in anti-friction bearings 11.

The advantages of our invention are expressed with particular clarity in the following example:

A bolt of a cotton imitation poplin textile, previously treated with soda lye of 6 B., with a weight of 150 g./m. a woven width of cm. and a length of 6000 m. was rolled up on the drum 5, the diameter of the bundle being cm. This bundle of material was subjected to washing treatment, in that first a washing solution consisting of water at 8090 C. containing 0.5 gr./l. of Fuman 483 (washing material consisting of a combination of non-ionogenie ethyl oxide condensation products and anionic material manufactured by the firm of Boehme Fettchemie) was introduced into drum 5. The drum was rotated and the intake of washing solution was periodically interrupted according to Table I.

TABLE I TABLE V Water of 80- Continuous intake Periodically inter- From min. To min. Rev. min. 90: C.0Cgnt71il1- fluid rupted fluid intake ing g. Fuman 483 r Fluid Length of Fluid Length of consumptreatment consumptreatment 0 50 With. tion in m! in min. tion in In. in min. 5 7 300 Without. 7 10 300 With. Water at 8090 C. con- 10 12 300 Without. taining 0.5 g./l. 12 14 300 With. Fuman" 483". 1. 45 22 1. 18 14 16 300 Without. Water at 7080 C- 1. 55 24 0.75 18 16 18 300 With. 10 Water at 10-20" C- 1. 15 1. 00 18 Total 4. 30 61 3. 00 64 Thereupon Water at 70-80 C. was let into the drum 5, the intake being periodically interrupted according to Table H.

TABLE II From min. To min. Rev. min. Water 70-80 C.

0 5 50 With. 5 7 300 Without. 7 10 300 With.

10 12 300 Without.

12 16 300 With.

16 18 300 Without.

Finally water at 10-20 C. was introduced into drum 5 with periodic interruptions according to Table III.

The washing treatment was then carried out again on a similar bolt of material, but with continuous intake of washing fluid according to Table IV.

TABLE IV Washing Fluid From min. To min. Rev. min.

Water at 8090 0. containing 0.5

g./l. "Fuman 483" 0 22 300 Water at 70-80 C... 22 46 300 Water at 1020 O 46 61 300 The comparative results with respect to water consumption and duration of treatment in the two methods of handling are shown in Table V.

We believe that the operation of our novel method will now be understood, and that the advantages thereof will be fully appreciated by those persons skilled in the art.

We claim:

1. A method of Washing yarns and sheet material comprising, wrapping the material to be washed on a perforated drum, rotating the drum, periodically introducing charges of Washing fluid into the drum for periods of one to five minutes during rotation thereof, and interrupting the flow of washing fluid into the drum for periods of one to three minutes.

2. A method according to claim 1, further characterized in that the respective charges of washing fluid vary as to composition.

3. A method according to claim 1, further characterized in that the respective charges of washing fluid vary as to temperature.

4. A method of washing yarns and sheet material comprising, wrapping the material to be washed on a perforated drum, rotating the drum at speeds of from to 300 revolutions per minute, and periodically introducing charges of washing fluid into the drum during rotation thereof.

References Cited UNITED STATES PATENTS 1,727,041 9/1929 Ryley 8-155 2,131,814 10/1938 Moncriif et a1. 8155.1 2,150,309 3/1939 Atwell 8155.l 3,233,437 2/1966 Windhausen 68150 MAYER WEINBLATT, Primary Examiner. 

